> For the complete documentation index, see [llms.txt](https://docs.minecraftbot.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.minecraftbot.com/api/utility.md).

# Utility

- [ChestMap](https://docs.minecraftbot.com/api/utility/chestmap.md): Allows you to easily and efficiently (remember full/empty chests) find and open chests by criteria. Create with 'Context.Functions.CreateChestMap()'.
- [LocationBlacklistCollection](https://docs.minecraftbot.com/api/utility/locationblacklistcollection.md): Allows you to "blacklist" (set as invalid) locations for a certain amount of times. Create with 'LocationBlacklistCollection.CreatePerBot(...)' or 'LocationBlacklistCollection.CreateGlobal(...)'.
- [LocationWhitelistCollection](https://docs.minecraftbot.com/api/utility/locationwhitelistcollection.md): Allows you to "whitelist" a location for a certain bot, but "blacklist" it for others. Create with 'LocationWhitelistCollection.Create(...)'.